<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title></title>
		<script src="https://unpkg.com/vue/dist/vue.js"></script>
	</head>
	<body>
		<div id="app4">
		  <p v-if="seen">This is a if</p>
		</div>
	</body>
	<script>
		var app4=new Vue({
		  el: '#app4',
		  data: {
		    seen:false
		  }
		
	})
	</script>
</html>
